You won't want to be noticed after you've been through what happened to me last week. Most of the times you will run into nice people, but there is always some people who will say nice things about your car but are jealous deep in their hearts. And a small portion of these people will turn that jealousy into physical action and f*ck up your car when you're not around...
Yeah man, it's soo hard to deal with thoes people. If you let them clean your windshield, you have to take the risk of them scratching the windshield and not only that, i doubt they ever clean the equipment or water that they use, but how do you reject them without getting them mad??
I've seen a chinese driver in his 40s or 50s waving and saying NOOO to the guy, I guess somehow he offended him. He applied the soup anyways and just left it there.
What I do is just smile at him...say NO thanks in a very polite way, it's never good to get them mad, u never know what they will do to your car. It's easy for them to leave a scratch and run away, and you can't catch them because you're in the middle of the road.